Dear querist,
since you are asking prospective options available apart from divorce, the options available with the husband is to file an application under section 9 of the Hindu marriage act, 1955 which is the restitution of conjugal rights. whereby, the court will be asking the reason for the seperation and might order to love together, if not, on that basis divorce can be filed under section 13(1) of hindu marriage act, 1955.
If she is well educated and has means to maintain herself, than court will be considering that while deciding if she file any petition for the maintenance. Usually, its 25% of the monthly income of the husband or some fixed amount decided seeing the whereabouts. However, arguments can make wonders that no maintenance might be allowed by the court.
since, the children are above 6 yrs of age their natural guardianship does not vest with the mother as a right under section 6 of hindu minority and guardianship act. Therefore, the custody can be given to the father if the children wants to live with the father and court will also see that the father has the equitable means to educate their children. therefore, the custody can be claimed by the father.
Time frame if wife is unwilling depends on case to case. However, it might take a period of 2 yrs. During the pending case, the interim custody can be asked from the court which might tilt in the favour of the father as the children are willing to live with the father( as stated in the query).
Hope that solves your query.
You can contact me for consultation and dealing with your case.
Regards,
YUGANSHU SHARMA
ADVOCATE
DELHI HIGH COURT